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Method for manufacturing polypropylene coating member, and polypropylene coating member and home appliance using the coating member

A polypropylene system and manufacturing method technology, applied in application, coating, washing equipment, etc., can solve the problem of difficult coating of resin, and achieve the effect of inhibiting shrinkage

Active Publication Date: 2013-02-06
HITACHI APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, polypropylene is lightweight and has excellent chemical resistance, so it is often used as home appliance parts, but resins (especially polypropylene) have the problem of being difficult to paint

Method used

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  • Method for manufacturing polypropylene coating member, and polypropylene coating member and home appliance using the coating member
  • Method for manufacturing polypropylene coating member, and polypropylene coating member and home appliance using the coating member
  • Method for manufacturing polypropylene coating member, and polypropylene coating member and home appliance using the coating member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 and 2

[0086] In this embodiment, the injection molding method is used to make a Figure 1A The illustrated cover body 1 (rear half body 1b) is a resin plate-like member (base material 3) having almost the same shape. Here, the member dimensions (the length of the long side) of the base material 3 were set as shown in Table 1.

[0087] Polypropylene (manufactured by Sun Aroma, trade name PM970W) was used as the molding resin, and PP masterbatch (manufactured by Hitachi Taga Technology, HIEPOCK20FA) was added to the polypropylene so that talc in the volume ratio shown in Table 1 was uniformly mixed during molding. For molding. The addition amount of the talc in Examples 1 and 2 was set to satisfy the above formula (2).

[0088] The primer coating on the substrate 3 was obtained by adding 3 parts by weight of a resin-coated aluminum sheet to 100 parts by weight of Superclon 223M (manufactured by Nippon Paper Chemical Co., Ltd.) as a (meth)acrylic modified chlorinated polyolefin. (man...

Embodiment 3 and 4

[0095] In this embodiment, as another embodiment, the injection molding method is used to make a Figure 1A The shown washing machine top cover 6 is a resin-made member (base material 3 ) having almost the same shape. Here, the member dimensions (the length of the long side) of the base material 3 were set as shown in Table 1.

[0096] The molding resin is the same as in Examples 1 and 2. Polypropylene (manufactured by Japan Sun Aroma Co., Ltd., trade name PM970W) is used, and the PP masterbatch (Hitachi Taka Technology Corporation, HIEPOCK20FA) was added to polypropylene for molding. The amount of talc added in Examples 3 and 4 was set to satisfy the above formula (1).

[0097] In this example, molding was performed in the same manner as in Examples 1 and 2 to form the coating film 2 on the surface of the base material 3 to obtain the top cover 6 as a coated member shown in Table 1.

Embodiment 5 and 6

[0099] In this embodiment, as another embodiment, the injection molding method is used to make a Figure 4B The shown cleaner cover 12 is a substantially identical-shaped resin member (base material 3 ). Here, the member dimensions (the length of the long side) of the base material 3 were set as shown in Table 1.

[0100] As the molding resin, polypropylene (manufactured by Japan Sun Aroma Co., Ltd., trade name PM970W) was used in the same manner as in Examples 1 and 2, and the PP masterbatch (Hitachi Taka Technology Corporation, HIEPOCK20FA) was added to polypropylene for molding. The amount of talc added in Examples 5 and 6 was set to satisfy the above formula (2).

[0101] In this example, molding was carried out in the same manner as in Examples 1 and 2, and the coating film 2 was formed on the surface of the base material 3 to obtain the cleaner cover 12 as a coated part shown in Table 1.

[0102] The following coating film adhesion test and shrinkage evaluation were p...

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PUM

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Abstract

The present invention provides a polypropylene coating member and enables the dimension error of the polypropylene coating member to be same with that of a non-coated member. Both the polypropylene coating member and the non-coated member can be assembled in other members. The polypropylene coating member is obtained by using a non-coated resin member to mold and coat. The method for manufacturing the polypropylene coating member comprises the steps of: mixing the inorganic filler into polypropylene, molding by the injection molding method, coating, heating, and setting the blending amount of the inorganic filler to be within a predetermined range.

Description

technical field [0001] The present invention relates to a method for producing painted parts made of polypropylene, painted parts made of polypropylene, and home appliances using the same. Background technique [0002] In general, many home appliance parts made of coated steel sheets, glass, resin, and the like are used as exterior parts of home electric appliances. In particular, since resin is cheaper and lighter than other materials, various resins are used depending on the location of home appliances. Among them, polypropylene is light in weight and excellent in chemical resistance, so it is often used as home appliance parts, but resins (especially polypropylene) have the problem of being difficult to coat. [0003] As a method of coating a resin (for example, polypropylene), a method of applying a primer (undercoat) such as a chlorinated polyolefin to the resin is known (for example, refer to Patent Document 1). According to this coating method, by selecting a primer...

Claims

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Application Information

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IPC IPC(8): C08J7/04C08L23/12C08K3/34C09D123/28C09D151/06D06F39/14
Inventor 桑原孝介天羽悟惣田诚中野诚一郎石田刚
Owner HITACHI APPLIANCES INC